/*
 *   Copyright 2022. Huawei Technologies Co., Ltd. All rights reserved.
 *
 *      Licensed under the Apache License, Version 2.0 (the "License");
 *      you may not use this file except in compliance with the License.
 *      You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *      Unless required by applicable law or agreed to in writing, software
 *      distributed under the License is distributed on an "AS IS" BASIS,
 *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *      See the License for the specific language governing permissions and
 *      limitations under the License.
 */

package com.huawei.hms.videoeditor.ui.mediaeditor.ai.fragment;

import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.viewpager.widget.PagerAdapter;

import java.util.List;

public class ViewPagerAdapter extends PagerAdapter {

    private final List<View> mViewList;

    private final List<String> mTitleList;

    public ViewPagerAdapter(@NonNull List<View> viewList, List<String> titleList) {
        mViewList = viewList;
        mTitleList = titleList;
    }

    @Override
    public int getCount() {
        return mViewList.size();
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        container.addView(mViewList.get(position));
        return mViewList.get(position);
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;
    }

    @Override
    public int getItemPosition(@NonNull Object object) {
        return POSITION_NONE;
    }

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        if (position >= mTitleList.size()) {
            return "";
        }
        return mTitleList.get(position);
    }
}
